Quicksilver (formerly Jonathan Quick) leads the SilverHawks, with his metal bird companion TallyHawk at his side. Twins Emily and Will Hart became Steelheart and Steelwill, the SilverHawks’ technician and strongman respectively. Country-singing Col. Bluegrass played a sonic guitar and piloted the team’s ship, the Miraj (pronounced "mirage" on the series, but given that spelling on the Kenner toy). Rounding out the group is a youngster “from the planet of the mimes,” named Copper Kidd (usually called "Kidd" for short), a mathematical genius who spoke in whistles and computerized tones. Their bionic bodies are covered by a full-body close-fitting metal armor that only exposes the face and an arm, the armor is equipped with a retractile protective mask, retractile wings under-arm (except Blueglass) thruster on elbows, and laser-weapons over the body. At the end of every episode, Copper Kidd was quizzed (along with the home audience) on various space facts by Col. Bluegrass.

Launching from their satellite base, Hawk Haven, the SilverHawks flew into battle five days a week for one season. The fictitious Galaxy of Limbo in which the series takes place apparently has an overall atmosphere with breathable air and acceptable living condition of temperature and pressure; characters speak in space and operate "open-air" vehicles, and Windhammer's powers work even when he is not on an actual planet. There is also gravity; characters not "flying" tend to fall downward relative to whatever vehicle, satellite, or other platform with which they lost footing.